Extrafloral nectaries are sugar producing glands found outside the flower. Theymost commonly occur on the leaf blade, rachis, petiole, stem, or in proximity to thereproductive parts of a plant, but they may also be found on bracts, stipules, orcotyledons of some species (179). Although Vergil (Georgica, Book IV) describesnectaries as sugar secreting organs in flowers, it was not until 1762 that the distinctionbetween floral and extrafloral nectaries was recognized (81).
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